I have a 1984 Camaro that had a 305 and auto trans. I didn't get either when I bought the car. I'm swapping a built 4.3 out of a 1999 GMC Sonoma in it with an edelbrock intake, 500cfm performer carb, headers, dual exhaust, 3.08 gears, and a 270hr comp cams camshaft (.500 lift and 215 duration on...

I just bought a couple new injectors for my truck. But the ones I have on there only have 1 of those rubber peices that fit between the injector and the wire connector peice. Doesn't have them on both injectors. how important are those exactly? Is it fine without it? Because mine's been running...